igb_uio: remove device reset in open

igb_uio: remove device reset in open

Remove device reset during application start, the reset for application
exit still there.

Reset in open removed because of following comments:
1- Device reset not completed when VF driver loaded, which cause VF PMD
   initialization error.
   Adding delay can solve the issue but will increase driver load time.

2- Reset will be issues all devices unconditionally, not very efficient
   way.

Fixes: b58eedfc7dd5 ("igb_uio: issue FLR during open and release of device file")
Cc: stable@dpdk.org
Signed-off-by: Ferruh Yigit <ferruh.yigit@intel.com>
Tested-by: Harish Patil <harish.patil@cavium.com>
Tested-by: Shijith Thotton <shijith.thotton@caviumnetworks.com>
Tested-by: Jingjing Wu <jingjing.wu@intel.com>